Model  | IP-300AP III SC  | IP-450AP III SC  | IP-600AP III SC  | 
Network interface  | Standard RJ45, 10M/100M network port, network port comes with upgrade function  | 
Support protocols  | TCP, UDP, IGMP, ICMP, ARP, compatible with SIP protocol, Onvif protocol.  | 
Audio format  | PCM(uncompressed format), ADPCM, MP3  | 
Standby  | No signal 2 minutes automatic standby  | 
Restart recovery time of power and network disconnection  | <1s  | 
Network delay  | File playback: less than 50ms, real-time speech: less than 100ms  | 
Transmission rate  | 10/100Mbps  | 
Audio mode  | Network data packet  | 
Amplifier frequency response  | 100HZ~15KHZ  | 
Harmonic distortion  | ≤0.3%  | 
Amplifier SNR  | >95db  | 
Line input sensitivity  | 0.9-1.1V (0+/-1dBV)  | 
Local input impedance  | 20k (balanced),  10k (unbalanced)  | 
Control output  | Passive trigger output  | 
Operating temperature  | -20℃~+60℃  | 
Operating humidity  | 10%~90%  | 
Amplifier power  | 300W  | 450W  | 600W  | 
Power consumption  | ≤20W (without load)  | 
Input power supply  | AC220V/50Hz AC110V/60Hz  | 
Dimensions  | 482(W) × 44(H) × 360(D)(mm)  |